Lamp cup and lighting apparatus comprising the same

Abstract

A lamp cup, adapted to be coupled with a luminous module, includes a cup body and a lens. The cup body includes a top wall and an annular sidewall extending downwardly from a periphery of the top wall. The top wall has a top surface to be joined with a circuit board of the luminous module and defines an aperture from top to bottom therein at a position corresponding to a light emitting component of the luminous module. The lens is securely mounted in the aperture of the top wall of the cup body to be aligned with the light emitting component.

The invention claimed is: 
     
       1. A lamp cup adapted to be coupled with a luminous module that includes a circuit board and a light emitting component mounted on bottom of the circuit board, the lamp cup comprising:
 a cup body including a top wall and an annular sidewall extending downwardly from a periphery of the top wall; the top wall having a top surface to be joined with the circuit board and an aperture defined from top to bottom at a position corresponding to the light emitting component; and 
 a lens securely disposed in the aperture of the top wall of the cup body to be aligned with the light emitting component. 
 
     
     
       2. The lamp cup of  claim 1 , wherein the top wall of the cup body further includes two opposing projections extending from an inner wall surface of the aperture of the top wall; the lens includes two upper lugs at opposite sides thereof and two notches defined in two other opposite sides thereof; and the lens is fastened on the cup body as a result of the lugs pressing against the top surface of the top wall of the cup body and the projections of the top wall of the cup body being trapped in the notches of the lens. 
     
     
       3. The lamp cup of  claim 2 , wherein the top wall of the cup body further includes a rotation limiting arrangement for limiting rotation of the lens with respect to the cup body. 
     
     
       4. The lamp cup of  claim 3 , wherein the rotation limiting arrangement includes an annular block around the aperture of the top wall; the annular block defines a pair of opposing grooves in which the lugs of the lens are rested. 
     
     
       5. The lamp cup of  claim 2 , wherein the top wall of the cup body further includes another two opposing projections extending from the inner wall surface of the aperture of the top wall and located at a position lower than that of the first two opposing projections for holding the lens. 
     
     
       6. The lamp cup of  claim 1 , wherein the top wall of the cup body further includes at least one positioning post thereon to be received in a positioning hole of the circuit board. 
     
     
       7. The lamp cup of  claim 3 , wherein the top wall of the cup body further includes a pair of positioning posts and a pair of supporting posts thereon; the positioning posts are constructed to be inserted in positioning holes of the circuit board; and the supporting posts and the annular block have the same height for holding the circuit board. 
     
     
       8. The lamp cup of  claim 7 , wherein the top wall of the cup body further defines a plurality of holes from top to bottom therein for screws. 
     
     
       9. A lighting apparatus comprising:
 a luminous module including a circuit board and a light emitting component mounted on bottom of the circuit board; 
 a cup body including a top wall and an annular sidewall extending downwardly from a periphery of the top wall; the top wall having a top surface joined with the circuit board and an aperture defined from top to bottom at a position corresponding to the light emitting component; and 
 a lens securely mounted in the aperture of the top wall of the cup body and aligned with the light emitting component. 
 
     
     
       10. The lighting apparatus of  claim 9 , wherein the top wall of the cup body further includes two opposing projections extending from an inner wall surface of the aperture of the top wall; the lens includes two upper lugs at opposite sides thereof and two notches defined in two other opposite sides thereof; and the lens is fastened on the cup body as a result of the lugs pressing against the top surface of the top wall of the cup body and the projections of the top wall of the cup body being trapped in the notches of the lens. 
     
     
       11. The lighting apparatus of  claim 10 , wherein the top wall of the cup body further includes a rotation limiting arrangement for limiting rotation of the lens with respect to the cup body. 
     
     
       12. The lighting apparatus of  claim 11 , wherein the rotation limiting arrangement includes an annular block around the aperture of the top wall; the annular block defines a pair of opposing grooves in which the lugs of the lens are rested. 
     
     
       13. The lighting apparatus of  claim 10 , wherein the top wall of the cup body further includes another two opposing projections extending from the inner wall surface of the aperture of the top wall and located at a position lower than that of the first two opposing projections for holding the lens. 
     
     
       14. The lighting apparatus of  claim 9 , wherein the top wall of the cup body further includes at least one positioning post and received in a positioning hole that is defined in a bottom surface of the circuit board. 
     
     
       15. The lighting apparatus of  claim 12 , wherein the top wall of the cup body further includes a pair of positioning posts and a pair of supporting posts arranged around the aperture of the top wall; the positioning posts are received in positioning holes that are defined in a bottom surface of the circuit board; and the supporting posts and the annular block have the same height and abut against the bottom surface of the circuit board. 
     
     
       16. The lighting apparatus of  claim 15 , wherein the top wall of the cup body further defines a plurality of holes from top to bottom therein for screws.